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Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Mississippi River at Illinois City Observed crest: 4.92 ft at 12:00pm Feb 07 Observed: 6.15 ft at 10:00am Jan 31 Observed: 6.09 ft at 12:00pm Jan 31 Observed: 6.03 ft at 2:00pm Jan 31 Observed: 6.01 ft at 4:00pm Jan 31 Observed: 5.9 ft at 12:00am Feb 1 Observed: 5.9 ft at 2:00am Feb 1 Observed: 5.9 ft at 4:00am Feb 1 Observed: 5.91 ft at 6:00am Feb 1 Observed: 5.92 ft at 8:00am Feb 1 Observed: 5.93 ft at 10:00am Feb 1 Observed: 5.91 ft at 12:00pm Feb 1 Observed: 5.85 ft at 2:00pm Feb 1 Observed: 5.84 ft at 4:00pm Feb 1 Observed: 5.81 ft at 6:00pm Feb 1 Observed: 5.78 ft at 8:00pm Feb 1 Observed: 5.76 ft at 10:00pm Feb 1 Observed: 5.74 ft at 12:00am Feb 2 Observed: 5.71 ft at 2:00am Feb 2 Observed: 5.7 ft at 4:00am Feb 2 Observed: 5.68 ft at 6:00am Feb 2 Observed: 5.67 ft at 8:00am Feb 2 Observed: 5.66 ft at 10:00am Feb 2 Observed: 5.51 ft at 12:00pm Feb 2 Observed: 5.48 ft at 2:00pm Feb 2 Observed: 5.45 ft at 4:00pm Feb 2 Observed: 5.4 ft at 6:00pm Feb 2 Observed: 5.37 ft at 8:00pm Feb 2 Observed: 5.36 ft at 10:00pm Feb 2 Observed: 5.41 ft at 12:00am Feb 3 Observed: 5.46 ft at 2:00am Feb 3 Observed: 5.51 ft at 4:00am Feb 3 Observed: 5.56 ft at 6:00am Feb 3 Observed: 5.61 ft at 8:00am Feb 3 Observed: 5.65 ft at 10:00am Feb 3 Observed: 5.56 ft at 12:00pm Feb 3 Observed: 5.44 ft at 2:00pm Feb 3 Observed: 5.43 ft at 4:00pm Feb 3 Observed: 5.41 ft at 6:00pm Feb 3 Observed: 5.38 ft at 8:00pm Feb 3 Observed: 5.37 ft at 10:00pm Feb 3 Observed: 5.37 ft at 12:00am Feb 4 Observed: 5.37 ft at 2:00am Feb 4 Observed: 5.38 ft at 4:00am Feb 4 Observed: 5.39 ft at 6:00am Feb 4 Observed: 5.4 ft at 8:00am Feb 4 Observed: 5.41 ft at 10:00am Feb 4 Observed: 5.41 ft at 12:00pm Feb 4 Observed: 5.38 ft at 2:00pm Feb 4 Observed: 5.33 ft at 4:00pm Feb 4 Observed: 5.31 ft at 6:00pm Feb 4 Observed: 5.29 ft at 8:00pm Feb 4 Observed: 5.27 ft at 10:00pm Feb 4 Observed: 5.24 ft at 12:00am Feb 5 Observed: 5.23 ft at 2:00am Feb 5 Observed: 5.22 ft at 4:00am Feb 5 Observed: 5.2 ft at 6:00am Feb 5 Observed: 5.18 ft at 8:00am Feb 5 Observed: 5.12 ft at 10:00am Feb 5 Observed: 5.1 ft at 12:00pm Feb 5 Observed: 5.15 ft at 2:00pm Feb 5 Observed: 5.13 ft at 4:00pm Feb 5 Observed: 5.11 ft at 6:00pm Feb 5 Observed: 5.07 ft at 8:00pm Feb 5 Observed: 5.06 ft at 10:00pm Feb 5 Observed: 5.05 ft at 12:00am Feb 6 Observed: 5.04 ft at 2:00am Feb 6 Observed: 5.01 ft at 4:00am Feb 6 Observed: 4.99 ft at 6:00am Feb 6 Observed: 4.99 ft at 8:00am Feb 6 Observed: 4.99 ft at 10:00am Feb 6 Observed: 4.98 ft at 12:00pm Feb 6 Observed: 4.97 ft at 2:00pm Feb 6 Observed: 4.91 ft at 4:00pm Feb 6 Observed: 4.9 ft at 6:00pm Feb 6 Observed: 4.9 ft at 8:00pm Feb 6 Observed: 4.9 ft at 10:00pm Feb 6 Observed: 4.9 ft at 12:00am Feb 7 Observed: 4.9 ft at 2:00am Feb 7 Observed: 4.9 ft at 4:00am Feb 7 Observed: 4.9 ft at 6:00am Feb 7 Observed: 4.9 ft at 8:00am Feb 7 Observed: 4.9 ft at 10:00am Feb 7 Observed: 4.92 ft at 12:00pm Feb 7 Observed: 4.91 ft at 2:00pm Feb 7 Observed: 4.91 ft at 4:00pm Feb 7 Observed: 4.91 ft at 6:00pm Feb 7 Observed: 4.91 ft at 8:00pm Feb 7 Observed: 4.9 ft at 10:00pm Feb 7 Observed: 4.9 ft at 12:00am Feb 8 Observed: 4.9 ft at 2:00am Feb 8 Observed: 4.9 ft at 4:00am Feb 8 Observed: 4.9 ft at 6:00am Feb 8 Observed: 4.9 ft at 8:00am Feb 8 Observed: 4.91 ft at 10:00am Feb 8 Observed: 4.91 ft at 12:00pm Feb 8 Observed: 4.91 ft at 2:00pm Feb 8 Observed: 4.9 ft at 4:00pm Feb 8 Observed: 4.9 ft at 6:00pm Feb 8 Observed: 4.9 ft at 8:00pm Feb 8 Observed: 4.91 ft at 10:00pm Feb 8 Observed: 4.9 ft at 12:00am Feb 9 Observed: 4.9 ft at 2:00am Feb 9 Observed: 4.9 ft at 4:00am Feb 9 Observed: 4.9 ft at 6:00am Feb 9 Observed: 4.9 ft at 8:00am Feb 9 Observed: 4.9 ft at 10:00am Feb 9 Observed: 4.9 ft at 12:00pm Feb 9 Observed: 4.9 ft at 2:00pm Feb 9 Observed: 4.9 ft at 4:00pm Feb 9 Observed: 4.9 ft at 6:00pm Feb 9 Observed: 4.9 ft at 8:00pm Feb 9 Observed: 4.91 ft at 10:00pm Feb 9 Observed: 4.9 ft at 12:00am Feb 10 Observed: 4.9 ft at 2:00am Feb 10 Observed: 4.9 ft at 4:00am Feb 10 Observed: 4.9 ft at 6:00am Feb 10 Observed: 4.9 ft at 8:00am Feb 10 Forecast: 4.9 ft at 12:00pm Feb 9 Forecast: 4.9 ft at 6:00pm Feb 9 Forecast: 4.9 ft at 12:00am Feb 10 Forecast: 4.9 ft at 6:00am Feb 10 Forecast: 4.9 ft at 12:00pm Feb 10 Forecast: 4.9 ft at 6:00pm Feb 10 Forecast: 4.8 ft at 12:00am Feb 11 Forecast: 4.8 ft at 6:00am Feb 11 Forecast: 4.8 ft at 12:00pm Feb 11 Forecast: 4.8 ft at 6:00pm Feb 11 Forecast: 4.8 ft at 12:00am Feb 12 Forecast: 4.7 ft at 6:00am Feb 12 Forecast: 4.7 ft at 12:00pm Feb 12 Forecast: 4.7 ft at 6:00pm Feb 12 Forecast: 4.6 ft at 12:00am Feb 13 Forecast: 4.6 ft at 6:00am Feb 13 Forecast: 4.6 ft at 12:00pm Feb 13 Forecast: 4.6 ft at 6:00pm Feb 13 Forecast: 4.5 ft at 12:00am Feb 14 Forecast: 4.5 ft at 6:00am Feb 14 Forecast: 4.5 ft at 12:00pm Feb 14 Forecast: 4.5 ft at 6:00pm Feb 14 Forecast: 4.5 ft at 12:00am Feb 15 Forecast: 4.4 ft at 6:00am Feb 15 Forecast: 4.4 ft at 12:00pm Feb 15 Forecast: 4.4 ft at 6:00pm Feb 15 Forecast: 4.4 ft at 12:00am Feb 16 Forecast: 4.4 ft at 6:00am Feb 16 Graph Created (8:34am Feb 10, 2010) Observed Forecast (issued 7:15am Feb 10) U.S. Army Corps of Engineers ILNI2 (plotting HTIRZ) Gage 0 Datum: 533.79 Latest observed value: 4.9 ft at 8:00 AM CST 10-Feb-2010. Flood Stage is 15.0 ft. Flow (kcfs)
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NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts for the Mississippi River at Illinois City are issued routinely year-round.

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Upstream Gauge - at Rock Island Upstream Gauge Downstream Gauge Downstream Gauge - at Muscatine

Flood Categories (in feet)
Major Flood Stage:18
Moderate Flood Stage:16
Flood Stage:15
Action Stage:14

Historical Crests
(1) 24.10 ft on 07/09/1993
(2) 23.27 ft on 04/28/1965
(3) 22.96 ft on 06/17/2008
(4) 22.41 ft on 04/25/2001
(5) 20.05 ft on 04/25/1973
(6) 19.94 ft on 05/01/2008
(7) 19.69 ft on 04/26/1969
(8) 19.57 ft on 04/20/1997
(9) 19.50 ft on 04/28/1952
(10) 19.45 ft on 05/09/1975

Low Water Records
(1) -2.3 ft on 12/01/1937
(2) -2.0 ft on 12/07/1936
(3) -1.5 ft on 08/11/1936
(4) -0.8 ft on 09/21/1937
(5) 0.4 ft on 02/09/1959

 Mississippi River at Illinois City location map

Flood Impacts Collapse
29.0 Water reaches the top of the Milan levee.
24.5 Water reaches the top of the Andalusia levee.
22.5 Water affects the entire state park at Fairport and is at the foundations of facilities there.
21.5 Water affects the Post Office and several commercial buildings in Buffalo.
20.5 Water affects Front Street and several homes in Buffalo. Water also affects the fish hatchery at Fairport.
20.0 Water affects Buffalos Front Street at Franklin and on Iowa Highway 22 west of town. Water affects Illinois Highway 92 west of Andalusia.
19.5 Water affects Buffalos Franklin Street and into some yards from seepage. At Buffalo Shores...water is at the foundations of several homes.
19.0 Water affects the Clarks Ferry Recreational Area at Montpelier.
18.5 Water floods Andalusias Second Street in the unprotected area. Water is also at the foundations of several homes in Midway Beach.
18.0 Water affects the state park campground at Fairport.
17.0 Water affects the Buffalo Shores Access Area.
16.0 Water affects the park at Andalusia.
13.0 Water affects residents on Smiths Island.

About This Location Collapse
Latitude: 41.432000° N, Longitude: 91.015000° W, Horizontal Datum: NAD83

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 15 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 N/A N/A Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 N/A N/A Older USGS topographic maps, NGVD29 benchmarks
MSL N/A N/A Older USGS topographic maps, MSL benchmarks
Other 533.79 ft 548.79 ft  

Other Data Sources:
Corps of Engineers (COE) Info for Illinois City

Additional Information Collapse
How low could the river get?

Resources Collapse
Hydrologic Resources
 Additional Resources
   

Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information
National Weather Service
Quad Cities Weather Forecast Office
9050 Harrison Street
Davenport, IA 52806-7326
(563) 386-3976
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